YOU SAID:

I can't believe they kept my old motorcycle and it still runs.

INTO JAPANESE

彼らが私の古いバイクを保管していて、それがまだ走っているとは信じられません。

BACK INTO ENGLISH

I can't believe they kept my old bike and it's still running.

INTO JAPANESE

彼らが私の古い自転車を保管していて、まだ走っているなんて信じられません。

BACK INTO ENGLISH

I can't believe they kept my old bike and are still running.

INTO JAPANESE

彼らが私の古い自転車を保管していて、まだ走っているなんて信じられません。

BACK INTO ENGLISH

I can't believe they kept my old bike and are still running.